ALTOONA, Pa. - Pirates Prospects has learned that Mitch Keller has been promoted to Double-A Altoona. According to multiple sources, he will be joining the team tomorrow, although he just made his last start on Monday, so he won't be activated until his turn in the rotation comes up.
In 15 starts for Bradenton this season, Keller pitched to a 3.14 ERA in 77.1 IP. After a tough return from his June back injury, Keller has been pitching great recently. In his last three starts combined, he has allowed three runs over 19 innings, and he hasn't walked a batter in either of his last two starts.